If you type help at the Command prompt it gives you a list of all the commands. TITLE will allow you to change the title from the command prompt at least on my version of Windows XP. You just type "TITLE text". If you want to change the command prompt you would use PROMPT. "Help command" gives you more information on each of them. If you are trying to do this programatically, then you would use the Window Console functions.

"Knowledge is proud that she knows so much; Wisdom is humble that she knows no more."
-- Cowper